Audio-Technica U851RB Condenser Boundary Microphone

Optimize voice pickup and system reliability with the Audio-Technica U851Rb boundary microphone — a pro-grade condenser boundary mic engineered for conferencing, broadcast, professional recording and security monitoring. The U851Rb delivers clear, natural speech with superior off-axis rejection from its cardioid UniPoint element, helping teams and operators achieve maximum gain-before-feedback in challenging acoustic environments. With a full 20 Hz–20 kHz frequency response and a sensitivity optimized for speech (–34 dB), the mic captures intelligible audio for conferencing systems, television sets, and surveillance audio feeds. Installations are faster and cleaner thanks to the PivotPoint rotating output connector, 25 ft cable, and a heavy die-cast enclosure with silicone foam isolation pads to reduce surface vibration. UniGuard RFI-shielding technology protects signal integrity in RF-dense environments common to security and monitoring deployments. For integrators who need flexible coverage, interchangeable elements expand the pickup from 100° up to 360°. Backed by Audio-Technica reliability and a 2-year warranty, the U851Rb is ideal for meeting rooms, control centers, broadcast suites and discreet surveillance applications — add to your AV or security system today.

• Exceptional speech clarity and off-axis rejection for intelligible conferencing and reliable security monitoring
• Low-profile, surface-mount design minimizes visibility and vibration for discreet installations in meeting rooms, broadcast, or surveillance
• Interchangeable condenser elements (cardioid, hypercardioid, omnidirectional) provide flexible pickup patterns to match room acoustics and monitoring needs
• PivotPoint rotating output connector and 25 ft cable simplify installation and routing for permanent AV and security setups
• Robust die-cast chassis, UniGuard RFI shielding and self-contained phantom-powered electronics ensure durable, interference-free performance without external modules